/**
 * @file mainwindow.h
 * @brief  control panel of the car
 * 
 * Copyright (C) 2014 JakeYang <add358@gmail.com>
 * 
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */
#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QMainWindow>
#include <QHostAddress>
#include <QProcess>
#include <QUdpSocket>
#include <QKeyEvent>


namespace Ui {
class MainWindow;
}

class MainWindow : public QMainWindow
{
    Q_OBJECT

public:
    explicit MainWindow(QWidget *parent = 0);
    ~MainWindow();

private slots:
    void on_pushButton_sure_clicked();

    void on_pushButton_forward_clicked();

    void on_pushButton_backward_clicked();

    void on_pushButton_stop_clicked();

    void udp_recv();

    void on_pushButton_turnLeft_clicked();

    void on_pushButton_turnRight_clicked();

    void on_pushButton_turnBackLeft_clicked();

    void on_pushButton_turnBackRight_clicked();

private:
    enum _Direction_Flag {
        STOP    = 0,
        FORWARD = Qt::Key_Up,
        BACKWARD = Qt::Key_Down
    };

    Ui::MainWindow *ui;
    QUdpSocket *m_udpSocket;
    QHostAddress m_serverAddr;
    quint16 m_serverPort;
    QProcess *process;
    enum _Direction_Flag direction_flag;

    void setComponentsDisable(bool flag);
    void keyPressEvent(QKeyEvent *e);
    void keyReleaseEvent(QKeyEvent *e);
};

#endif // MAINWINDOW_H
